Re: [PATCH 09/10] t4213: test --function-name option

> Am 3/27/2014 19:50, schrieb David A. Dalrymple (and Bhushan G. Lodha):
>> From: "Bhushan G. Lodha & David A. Dalrymple" <dad-bgl@mit.edu>
>>
>> This test builds a sample C file, adding and removing functions, and
>> checks that the right commits are filtered by --function-name matching.
>
> This is probably the most important patch in your series as it documents
> the expected behavior. Unfortunately, I find its clarity very lacking. :(
>
> This new feature uses the userdiff driver, IIUC. Does it do so in all
> respects? In particular, does it also evaluate the negative patterns? For
> example, when there is a label in the code, is it not mistaken as the
> beginning of a function? A test for this case would be very instructive.
>
> Furthermore, consider a patch for a change at the very beginning of a
> function. Then the function name would appear in the pre-context of the
> hunk, but the hunk header would show the function before the one with the
> change. Would such a change confuse your implementation? I guess not.
> Again, a test case would remove any doubts.
>
> Is it possible to search for a change that is before any functions? It
> would be useful to enumerate commits that change #include lines.
>
>>
>> Signed-off-by: David Dalrymple (on zayin) <davidad@alum.mit.edu>
>> ---
>>  t/t4213-log-function-name.sh | 73 ++++++++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 73 insertions(+)
>>  create mode 100755 t/t4213-log-function-name.sh
>>
>> diff --git a/t/t4213-log-function-name.sh b/t/t4213-log-function-name.sh
>> new file mode 100755
>> index 0000000..1243ce5
>> --- /dev/null
>> +++ b/t/t4213-log-function-name.sh
>> @@ -0,0 +1,73 @@
>> +#!/bin/sh
>> +
>> +test_description='log --function-name'
>> +. ./test-lib.sh
>> +
>> +test_expect_success setup '
>> +     echo "* diff=cpp" > .gitattributes

>> +
>> +     >file &&
>> +     git add file &&
>> +     test_tick &&
>> +     git commit -m initial &&
>> +
>> +     printf "int main(){\n\treturn 0;\n}\n" >> file &&
>> +     test_tick &&
>> +     git commit -am second
>
> Broken && chain here and later as well. Please be careful.
>
>> +
>> +     printf "void newfunc(){\n\treturn;\n}\n" >> file &&
>> +     test_tick &&
>> +     git commit -am third
>
>         git commit -am "append a function" &&
>
>> +
>> +     printf "void newfunc2(){\n\treturn;\n}\n" | cat - file > temp &&
>> +     mv temp file &&
>> +     test_tick &&
>> +     git commit -am fourth
>
>         git commit -am "prepend a function" &&
>
> etc. You get the picture.
>
>> +
>> +     printf "void newfunc3(){\n\treturn;\n}\n" | cat - file > temp &&
>> +     mv temp file &&
>> +     test_tick &&
>> +     git commit -am fifth
>> +
>> +     sed -i -e "s/void newfunc2/void newfunc4/" file &&
>> +     test_tick &&
>> +     git commit -am sixth
>> +'
>> +
>> +test_expect_success 'log --function-name=main' '
>
> test_expect_success 'log --function-name finds a function with a change' '
>
>> +     git log --function-name=main >actual &&
>> +     git log --grep=second >expect &&
>> +     test_cmp expect actual
>> +'
>> +
>> +test_expect_success 'log --function-name "newfunc\W"' '
>
> test_expect_success 'log --function-name with extended regexp' '
>
> etc. You get the picture.
>
>> +     git log --function-name "newfunc\W" >actual &&
>> +     git log --grep=third >expect &&
>> +     test_cmp expect actual
>> +'
>> +
>> +test_expect_success 'log --function-name "newfunc2"' '
>> +     git log --function-name newfunc2 >actual &&
>> +     git log -E --grep "sixth|fourth" >expect &&
>> +     test_cmp expect actual
>> +'
>> +
>> +test_expect_success 'log --function-name "newfunc3"' '
>> +     git log --function-name newfunc3 >actual &&
>> +     git log --grep=fifth >expect &&
>> +     test_cmp expect actual
>> +'
>> +
>> +test_expect_success 'log --function-name "newfunc4"' '
>> +     git log --function-name newfunc4 >actual &&
>> +     git log --grep=sixth >expect &&
>> +     test_cmp expect actual
>> +'
>> +
>> +test_expect_success 'log --function-name "newfunc"' '
>> +     git log --function-name newfunc >actual &&
>> +     git log -E --grep "third|fourth|fifth|sixth" >expect &&
>> +     test_cmp expect actual
>> +'
>> +
>> +test_done
>>
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